HF. Problems Starting When Cold

HF. PROBLEMS STARTING WHEN COLD

Fault tracing conditions

All DTCs remedied. The engine is cold (<25°c = 770 F). The fault is not intermittent (See HG. Intermittent starting problems).
HF1

Checking The Idle Switch

-Ignition on.




Go into DTM 2 and check the idle switch in accordance with C. Fault tracing via the DLC.

The OBD system should respond with code 3-3-2 when the throttle is turned and the idle switch disengages.

The LED flashes rapidly

-WC. Adjusting TP switch.

The OBD system responds with code 3-3-2:

-Injector pulses HF2.

HF2

Injector Pulses

Connect a voltmeter between terminals 1 and 2 on one of the injectors.




-Operate the starter motor.

The voltmeter should read 400-900 mV.

If this value is OK

-Check the spark plug HF4.

If the reading Is Incorrect

-Check the ECT sensor HF3.

HF3

Checking The Engine Coolant Temperature (ECT) Sensor




Carry out fault tracing in accordance with EE. DTC 1-2-3

Engine temperature sensor signal absent or faulty.

If no fault Is found

-Return to A. How fault tracing is carried out.

HF4

Checking The Spark Plugs




-Remove all spark plugs.

Check that none of the spark plugs are worn and that the correct type spark plug is being used.

IF the spark plugs are OK

-Check the fuel pressure and residual pressure HF5.

IF the spark plugs are worn

-Replace all the spark plugs.

HF5

Checking The Fuel Pressure And Residual Pressure




Check the fuel pressure and residual pressure. Fuel Pressure

If the fuel pressure and residual pressure are OK

-Return to A. How fault tracing is carried out.